Re: [PATCH] drm/bridge: fix RC_CORE dependency

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On Thu, Jul 18, 2019 at 5:17 PM Dmitry Torokhov
<dmitry.torokhov@xxxxxxxxx> wrote:
> On Thu, Jul 18, 2019 at 6:13 PM Arnd Bergmann <arnd@xxxxxxxx> wrote:
> > On Thu, Jul 18, 2019 at 4:56 PM Andrzej Hajda <a.hajda@xxxxxxxxxxx> wrote:
> > > On 18.07.2019 16:21, Arnd Bergmann wrote:
> > > > On Thu, Jul 18, 2019 at 4:16 PM Andrzej Hajda <a.hajda@xxxxxxxxxxx> wrote:
> > > >> Proper solution has been already merged via input tree[1].
> > > >>
> > > >>
> > > >> [1]:
> > > >> https://lore.kernel.org/lkml/CAKdAkRTGXNbUsuKASNGLfwUwC7Asod9K5baYLPWPU7EX-42-yA@xxxxxxxxxxxxxx/
> > > > At that link, I only see the patch that caused the regression, not
> > > > the solution. Are you sure it's fixed?
> > >
> > >
> > > Ups, you are right, I though you are fixing what this patch attempted to
> > > fix :)
> > >
> > > Anyway, we want to avoid dependency on RC_CORE - this driver does not
> > > require it, but with RC_CORE it has additional features.
> >
> > Right, that's what my patch does: if RC_CORE is disabled, you can
> > still set DRM_SIL_SII8620=y, but if RC_CORE=m, DRM_SIL_SII8620
> > can only be =m or =n.
> >
> > > Maybe "imply INPUT" would help?
> >
> > No, that would make it worse. Device drivers really have no business
> > turning on other subsystems.
> >
>
> OK, in the meantime I will redo the branch by dropping the
> sil-sii8620.c Kconfig changes and also drop all "imply" business from
> applespi driver as they give us more trouble than they are worth. We
> do not have "imply" for i801_smbus for Symaptics SMBUS mode and it
> works fine. It it distro's task to configure the kernel properly.

Thanks!

I think the "drm/bridge: make remote control optional" patch is
fine with my fixup, the IS_ENABLED() checks take care of the
case where RC_CORE is unavailable, and the 'depends on
RC_CORE || !RC_CORE' line takes care of the RC_CORE=m
case.

I suppose Ronald could send a replacement patch with my
fixup after the merge window.

      Arnd
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